Tuning of lattice oxygen reactivity and scaling relation to construct better oxygen evolution electrocatalyst.

ABSTRACT: Developing efficient and low-cost electrocatalysts for oxygen evolution reaction is crucial in realizing practical energy systems for sustainable fuel production and energy storage from renewable energy sources. However, the inherent linear scaling relation for most catalytic materials imposes a theoretical overpotential ceiling, limiting the development of efficient electrocatalysts. Herein, using modeled Na_xMn₃O₇ materials, we report an effective strategy to construct better oxygen evolution electrocatalyst through tuning both lattice oxygen reactivity and scaling relation via alkali metal ion mediation. Specifically, the number of Na⁺ is linked with lattice oxygen reactivity, which is determined by the number of oxygen hole in oxygen lone-pair

SUBMITTER: Huang ZF 

PROVIDER: S-EPMC8238955 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature